Helen alison smith and george arbuthnott smith



June 3- 1924. 1,496,180

H. A. SMITH ET AL HEATER Filed Oct. 11 1922 INVENTORS.

j 62 0 38 low/Z J ATTORNE Patented June 3, 1924.

umrao "sures ALISON SMITH AND GEORGE ARBUTHNOTT SM ITH, OF VENICE, CALIFORNIA,

v 1,496,130 PATENT erence.

ASSIGNORS TO SECURITY TRUST & SAVINGS BANK, OF 110?: ANGELES, CALIFORNIA, TRUSTEE FOR ASSIGNO'RS AND LOUISE R. GANE.

HEATER.

Application'filed' October 11', 1922; seem notseasea T all whom it may concern:

Be it known that we, HELEN ALISON SMITH and GEORGE AYRBUTHNOTT SMITH, subjects of the King of England, residing at Venice, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Heaters, of which the followingisa specification.

Our invention relates'to heaters and is designed more especially for use in orchards, groves of citrus fruit, etc, for the elimina tion of frost.

The object of the invention is to provide an inexpensive heater of this character which will be economical in the comsumption of fuel and afford a slow burning and practically smokeless fire.

To these ends the invention consists in the novel construction and combination of devices hereinafter described and claimed.

In the accompanying drawings,-

Figure 1 is a view, partly in elevation and partly in transverse vertical section, of a heater embodying the invention in its form now preferred by us and illustrated with a fuel charge; Fig. 2 is a horizontal section through 22 of Fig. 1; Fig. 3 is a view similar to Fig. 1 of the heater of a somewhat modified form; Fig. 4 is a horizontal sectional view through 4i of Fig. 3; and Fig. 5 is a perspective View of a detachable bracket such as shown in Figs. 3 and 4.

According to the present invention, our heater comprises a tubular body 5 intended to be used in a vertical position. 7 represents a plate. hereinafter designated as the spreader, having a diameter greater than that of said body and is supported at selected elevations above the latter by means of body attachments 8 extending upwardly through apertures such as 9 provided in the spreader.

At about its midheight the peripheral Wall 10 of the body is provided with a plurality of circumferentially spaced air inlets or draft holes 11.

At each of these draft holes and extend ing inwardly of the wall 10 is provided a bracket which, as shown in Figs. 1 and 2, comprises a metal plate which is bent or cast to afford substantially horizontal shelf and roof elements 12 and 13 which are connected with each other at their inner ends vided with aperture-d extensions 15 and 16 to receive bolts 17 whereby the brackets are detachably secured to the wall lO.

F orop'erating, the body is suppliedwith 7 fuel; preferably briquettes A, Fig.- 1, 'of'coal, saw-dust, or other suitable combustible material, which is most conveniently done by temporarily removing the spreader 7. A briquette, as B, saturated with oil to render the same more readily combustible is placed upon the shelf element 12 of each bracket and is ignited through the respective draft hole and the flames therefrom are directed circumferentially by the respective bafile elements against the adjacent portion of the mass of fuel A.

This fuel is thus caused to become ignited and starts to burn at about the midheight of the heater, the smoke and hot combustion gases passing upwardly through the upper portion of the fuel to escape through the upper end 18 of the body 5, the spreader serving to deflect or spread the hot gases or smoke in directions radially of the heater axis.

Starting at the draft holes the fuel burns both upwardly and downwardly therefrom, the combustible gases from the fuel below the level of the draft holes become par tially burned in proximity of such holes and is completely consumed with the combustible gases driven from the fuel above the level of the draft holes to produce a slow burning fire with a minimum amount of smoke. The rapidity of the combustion is controlled by regulating the efl'ective sizes of the vent openings 18 by lowering or raising the spreader 7 with respect to the heater body, the draft holes 11 being protected by the brackets from becoming obstructed.

The modification shown in Figs. 3, 4 and 5 relates to the brackets which, as illustrated, each consists of a U-shaped shelf 12' seated upon the wall below a draft hole and having hook shaped terminal portions 12 which engage in holes 19 provided therefor in the wall 10. Where brackets of this character are used I employ devices extending inwardly from above each draft hole to prevent ashes or fuel from obstructing the same.

As shown in Figs. 8 and 4, the devices above referred to consist in tongue elements 20 stamped inwardly from the heater wall 10.

What we claim, is,-

1. In a heater of the character described, a tubular body provided in its circumference with a plurality of draft holes, a spreader plate secured in spaced relation above the upper end of the body, and fuel supporting brackets secured to the peripheral wall of said body at the respective draft holes.

2. In a tubular heater of the character described, having peripherally disposed ain inlet openings at about its midheight, an outlet opening at the top, brackets provided at the respective inlet openings, said brackets being each provided with a fuel supporting element and a baflie element.

3. An orchard heater, comprising a cylindrical open ended body member formed of sheet metal the entire interior area forming a fuel chamber, the wall of said body memher being provided midway between its ends with a plurality of draft openings.

4. An orchard heater, comprising a cylindrical open ended body member formed of sheet metal the entire interior area forming a fuel chamber, the wall of said body member being provided with a plurality of openings intermediate its ends, the upper end of said member being open, and a spreader plate detachably secured to said body member and disposed above the upper open end of said body member.

Signed at Venice, California, this 30 day of September 1922.

HELEN ALISON SMITH.

GEORGE ARBUTHNOTT SMITH. Witnesses:

ROSE LIEBER, JULIA S. MILLENER. 

